タイトルまたは説明

Yantai Yunsheng Petroleum Machine Accessories CO., lTD. founden in ***7, now is one of the professional manufacture producing sucker rod coupling.

Our main products: sucker rod coupling, including Class T, Class SM and Class UHS, Full size and Small hole. Moreover, we also produce  sucker rod coupling with great bevel edge and two way cambered petroleum coupling.

The certificate we have got: ISO***1 International Quality Management Certifacate and API SPEC *1B Certificate.

PERFORMANCE OF OUR PRODUCTS:

1.Meterial:AISI ***0(*0Cr)
2.Standard:API *1B
3.Spec: Class T & SM & SUB
4.Type: 5/8'', 3/4'', 7/8'', 1'', **1/8''
5.Smoothness:3.1**0*3
6.Coat Thickness: 0.*1in~0.*2in
7.Basic Hardness:HRC*6~*3
8.Surface Hardness: HRC*5~*2
9.Hole Rate:<2%
*0.Life: SM coupling>**0 days
            T coupling>*0 days